I require a plugin that allows you to input lets say a command where groupA can attack groupB but groupB can not attack people that are also in GroupB and vise versa My guess is the permission could be (in groupA's permission) rppvp.AgroupB rppvp.SgroupA The first one has an A saying they can attack group B The second one is saying S so they are safe from attacks from players in group A bump EDIT by Moderator: merged posts, please use the edit button instead of double posting.
You might want a more descriptive title. Like maybe "[REQ] Group based pvp mod" because when someone looks at your thread title they probably think its something completly different